package it.txt.ens.namespace.osgi.test;
import java.util.logging.Level;
import java.util.logging.Logger;

import it.txt.ens.namespace.NamespaceInquirer;
import it.txt.ens.namespace.exception.NamespaceInquirerException;

import org.osgi.framework.BundleContext;
import org.osgi.framework.Filter;
import org.osgi.util.tracker.ServiceTracker;

/***************************************************************************
 * Copyright 2012-2013 TXT e-solutions SpA
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * This work was performed within the IoT_at_Work Project
 * and partially funded by the European Commission's
 * 7th Framework Programme under the contract ICT-257367.
 *
 * Authors:
 *      Salvatore Piccione (TXT e-solutions SpA)
 *
 * Contributors:
 *        Domenico Rotondi (TXT e-solutions SpA)
 **************************************************************************/

/**
 * @author Salvatore Piccione (TXT e-solutions SpA - salvatore.piccione AT txtgroup.com)
 * @author Domenico Rotondi (TXT e-solutions SpA - domenico.rotondi AT txtgroup.com)
 *
 */
public class NamespaceInquirerTracker implements Runnable {

    private BundleContext context;
    private Filter filter;
    private static final long DEFAULT_WAITING_TIMEOUT = 5000;
    private static final Logger LOGGER = Logger.getLogger(NamespaceInquirerTracker.class.getName());
    
    public NamespaceInquirerTracker (BundleContext context, Filter filter) {
        this.context = context;
        this.filter = filter;
    }
    
    /* (non-Javadoc)
     * @see java.lang.Runnable#run()
     */
    @Override
    public void run() {
        ServiceTracker<NamespaceInquirer,NamespaceInquirer> tracker = 
                new ServiceTracker<NamespaceInquirer,NamespaceInquirer>(context,filter,null);
        tracker.open();
        
        try {
            NamespaceInquirer service = tracker.waitForService(DEFAULT_WAITING_TIMEOUT);
            if (service == null) {
                LOGGER.log(Level.SEVERE, "No namespace inquirer has been found using the filter: " + filter.toString());
            }
            try {
                String certificateIssuer = "anIssuer";
                String certificateSerialNumber = "aSerialNumber";
                String namespace = "TXT Plant - Energy Monitoring";
                boolean isTrusted = service.isTrustedCertificate(certificateIssuer, certificateSerialNumber, namespace);
                LOGGER.log(Level.FINE, "The certificate " + certificateSerialNumber + " issued by " + certificateIssuer + 
                        " is not trusted for the namespace " + namespace);
            } catch (NamespaceInquirerException e) {
                LOGGER.log(Level.SEVERE, "An error occurred while checking if the certificate is trusted",e);
            }
        } catch (InterruptedException e) {
            LOGGER.log(Level.SEVERE, "No namespace inquirer has been found using the filter: " + filter.toString());
        }
    }

}
